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13-05-2018
Mathematics

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given f(x)=6x+2 and g(x)=x^3 which of the following are true? check all correct answers
1. f(x) x g(x)=6x+2x^3
2. f(x) x g(x)=6x^4+2x^3
3. f(1) x g(3)=72
4. f(-1) x g(2)=-32

Respuesta :

mkryukova19 mkryukova19

13-05-2018

f(x)*g(x)= (6x+2)x³=6x⁴+2x³ Correct answer is 2.

f(1)= 6*1+2=8
g(3)=3³=27
f(1)*g(3)=8*27=216

f(-1)=6*(-1)=-6
g(2)=2³=8
f(-1)*g(2)=-4*8=-32
f(-1)*g(2)=-32 Correct answer 4.

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